Reheating steam temperature control method, system and equipment based on double closed-loop control structure

• Main Authors: NI XIANGHONG, CHEN GANG, HUA SHAN, LIN YILONG, LIAN DADE, FAN CHANGHAO, XIN JIANJUN, NIE ZHUOYUN
• Format: Patent
• Language: Chinese; English
• Published: 13.10.2023
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

The invention discloses a reheating steam temperature control method, system and equipment based on a double-closed-loop control structure, and relates to the technical field of reheating steam temperature control. The method comprises the steps that according to the opening degree of a smoke baffle at the current moment, a reheating steam temperature predicted value at the current moment and a reheating steam temperature measured value at the current moment, a fast-changing link nominal model, a slow-changing link nominal model and an error compensator are used for obtaining an intermediate variable predicted value at the next moment; according to the error between the reheating steam temperature target value and the reheating steam temperature measured value at the current moment, an intermediate variable target value is obtained through an integral enhanced PID controller; according to the intermediate variable target value and the intermediate variable predicted value at the next moment, the flue gas baff